Creating Mediterranean Sumac Chicken is straightforward. Follow these steps to achieve a delicious meal:

1. Prepare the Marinade: In a small bowl, mix together the sumac, olive oil, minced garlic, salt, black pepper, lemon zest, and lemon juice to create the marinade.
2. Marinate the Chicken: Place the chicken thighs in a large bowl or a resealable plastic bag. Pour the marinade over the chicken, making sure it’s evenly coated. Marinate for at least 30 minutes; for best results, marinate for a few hours or overnight in the refrigerator.
3. Preheat the Oven: Preheat your oven to 375°F (190°C).
4. Prepare the Baking Dish: Lightly grease a baking dish with olive oil. If using, add sliced onions and tomatoes to the bottom of the dish.
5. Arrange the Chicken: Place the marinated chicken thighs skin-side up in the prepared baking dish. Pour any remaining marinade over the chicken.
6. Bake the Chicken: Bake in the preheated oven for 25–30 minutes, or until the chicken reaches an internal temperature of 165°F (74°C) and is golden brown. If you’re using skin-on pieces, broil for an additional 2-3 minutes for crispier skin.
7. Rest the Chicken: Once cooked, remove the chicken from the oven and let it rest for 5 minutes.
8. Garnish and Serve: Before serving, sprinkle chopped parsley over the chicken for a fresh touch.

With these simple steps, you’ll have an incredible dish ready to impress!